David a



(No Model.)

D. A. DICKINSON.

FARM GATE.

No. 312,442. Patented Feb. 17,1885.

INVENTOR:

WITNESSES:

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Attorney.

N PETER$ PhnlmLilhoFJuphrr. WashmgiomDC tainer against the upright gate-bar.

UNITE STATES ATENT OFFICE.

DAVID A. DICKINSON, OF BALTIMORE, MARYLAND.

FARM-GATE.

SFECIFECATION forming part of Letters Patent No. 312,442, dated February 17, 1885.

(No model To all whom it may concern.-

Be it known that 1, DAVID A. DICKINSON, a citizen of the United States, residing at Baltimore, in the State of Maryland, have invented certain new and useful Improvements in EarmGates, of which the following is a specification.

My invention relates to an improved farmgate 5 and it consists in certain features of construction and-combinations of parts, which. will be described and then claimed.

The invention is illustrated in the 21060111138. nying drawings, in which Figure 1 is a front view of the gate in the closed position. Fig. 2 is a vertical section giving a side view. Figs. 3 and 4 are views of the gatebearings in the upper part of post. Fig. 5 shows the re Fig. 6 is a view of the latch-lever. Figs. 7 and 8 are views of the latch-retractor.

The gate A has two long upright sidebars, b, each having about midway of its ends a trunnion, c, which sets in a suitable bearing, (1, on. the post E. The trunnions and their bearings should be as high as the top of an ordinary vehicle. By this construction the gate and side bars are adapted to revolve in a vertical plane, and may take a horizontal position, (indicated by broken lines in Fig. 2,) or beturned to bring I the gatepart A to an upside-down position. (Indicated by broken lines, Fig. 1.) Two latchbars, f, are employed. These are parallel and slide freely through slot-s made in the'side bars. One projects at one side of the gate and the other projects at the other side, and the projected ends engage with notched irons gffixed on the gate-posts E. These latch-bars retain the gate in a closed position. The two latchbars are connected by an upright lever, H, pivoted at t to one of the cross-bars between them. By grasping the upper end of this lever both latclrbars may be projected or re tracted. A spring, 70, applied between one latchbar and one upright side bar serves to keep both latches projected. A spring-actir ated retainer, L, for the gate has a hollowed or inward-curved face, considered in the vertical direction, which bears against the outer side of one of the upright bars I). The straight shank m of the retainer occupies a keeper, L, fixed on one of the posts, and is adapted to slide back and forth therein. A spring, a,

\ fixed on the gate-post, bears on the shank end of the retainer and keeps it normally toward the upright bar. The bottom 0 and top 0 of the retainer are rounded, as shown, and thereb v,whe11 the gate revolves, the upright barb, which is slightly rounded on the outer side, readily passes onto the face of the retainer, and in doing so forces it back against its spring. \Vhen it is desired that the elevated gate shall remain in a horizontal position for the passage, forinstance, of a horse and wagon, the retainer L will hold it.

The means for opening and closing the gate consist of a sprocket-pulley, p, loose on one of the trunnions, and provided on one face with one or two pins, g, which, when the pulley has partly turned on the trunnion, will bear against the upright bar b. On the upper part of its rim the pulley has two knobs, 1, separated by a space which is occupied by the bent end 10 of the latch-retractor rod. Two pulleys, S, are mounted in suitable bearings set at one side of the roadwayone at each side of the gate and each has a hand-lever, s. by which it is partly turned. An endless chain, t, has one part passed over the sprocketpulley, p, thence from each side down; thence each downward portion passes undera roller,

u, to change its direction from the vertical to the horizontal, whence each part passes round one of the pulleys S. The other part of the chain does not pass over the trunnion-pulley, but passes direct between the said two roadway-pulleys. By this arrangement the two hand-levers s will always stand in a similar position-that is, if one leverbe turned to one side from a verticalposition the other will as sume the same position. The gate may be opened in either direction.

The latclrretractor is connected with the means for revolving the gate, and consists of a bell-crank lever, o, pivoted at o to the post, with one arm depending into the notchediron g, as seen in Fig. A rod, w, has its lower end connected with the upper arm of the bellcrank lever, and extends up alongside the post. Its upper end has a right-angled bend, w, which rests on the rim of the sprocket-pulley between the two knobs r. The rod w has a link-shaped slot. (Indicated'in Fig. '7 by broken lines.) This slot is occupied by the trunnion a. YVhile the rod is thus prevented from lateral movement it may move vertically. When the sprocket-pulley p is moved either way, one of the knobs r is brought under the bent end w of the rod, which is thereby raised or moved up and causes the depending arm of the bellcrank lever 12 to press against the projected end of one of the latch-bars and retract it. By this means the latch-barsfmay be disengaged from the notched ironsg upon moving the same lever s that revolves the gate. WVhen an extra high vehicle, or one with a high loadlike a load of hayis to pass the gate, the latter can be turned upside down.

Having described my invention, I claim and desire to secure by Letters Patent of the United Statet l. The combination of the gate-posts E, a

gate having upright side bars, b, each pro vided with a trunnion, a, sitting in hearings on the post, two parallel latch-bars, f, each projecting through an opposite side bar and the two connected by a lever pivoted to a crossbar between them, a lever, 11, on the gate-post to retract the latch-bars, a lever, s, mounted in a bearing set in the roadway, and means, substantially as described, connecting the retracting-lever on the gate-post with the lever in the roadway, as set forth.

2. The combination of the gate-posts, each having a bearing, (3, a gate having two trunnions one sitting in each bearing, whereby it may revolve in a vertical plane, and aspringactuated retainer, L, having a hollowed or in- Ward-curved face to press against the gate and hold it in a horizontal position, as set forth.

3. The combination of the gate-posts E, a rat having upright side bars, I), each pro vided with a trunnion, a, sitting in hearings on the posts, and means to hold the gate horileys in the roadway,

zontal, consisting of a keeper, L, on thepost, a retainer having a shank, m, adapted to slide in the keeper, auda spring, a, to keep the retainer normally toward the gate, as set forth.

4. The combination of the gateposts E, a gate having upright side bars, I), each provided with a trunnion, c, sitting in bearings 011 the posts, a pulley, p, on one of the trunnions, two pulleys, S, mounted in suitable bearings set in the roadway at opposite sides of the gate, and an endless chain, it, having one part passed over the said trunnion-pulley and from thence over each of the two puland the other part passed direct between the roadway-pulleys, as set forth.

5. The combination of the gate-posts E, a gate having upright side bars, I), each provided with a trunnion, c, sitting in bearings on the posts, a notched iron on the gatepost, a latch-bar, a bell-crank lever having one arm depending into the notched iron and adapted to bear on the latch-bar, and means. substantially as described, to press the depending arm against the lateh-bar, as set forth.

6. The combination of the gate-posts E, a gate having upright side bars, I), each provided with a trunnion, c, sitting in bearings on the posts, a pulley loose on one of the trunnions and provided with a pin, q, to bear against the upright bar, a latch-bar, and means, substantially as described, to retract the latch-bar and turn the gate, as set forth.

In testimony whereof I afiix my signature in presence of two witnesses.

DAVID A. DICKINSON.

Vi tnesses:

JOHN E. Monms, JNo. T. MAnnox. 

